<template>
  <div id="aCoursesList" class="bg-fa of">
    <!-- 课程详情 开始 -->
    <section class="container">

      <!-- 课程所属分类 开始 -->
      <section class="path-wrap txtOf hLh30">
        <a href="#" title class="c-999 fsize14">首页</a>
        \
        <a href="/course" title class="c-999 fsize14">课程列表</a>
        \
        <span class="c-333 fsize14">{{ course.subjectLevelOne }}</span>
        \
        <span class="c-333 fsize14">{{ course.subjectLevelTwo }}</span>
      </section>
      <!-- /课程所属分类 结束 -->

      <!-- 课程基本信息 开始 -->
      <div>
        <article class="c-v-pic-wrap" style="height: 357px;">
          <section id="videoPlay" class="p-h-video-box">
            <img :src="course.cover" :alt="course.title" class="dis c-v-pic" height="357px">
          </section>
        </article>
        <aside class="c-attr-wrap">
          <section class="ml20 mr15">
            <h2 class="hLh30 txtOf mt15">
              <span class="c-fff fsize24">{{ course.title }}</span>
            </h2>
            <section class="c-attr-jg">
              <span class="c-fff">价格：</span>
              <b class="c-yellow" style="font-size:24px;">￥{{ course.price }}</b>
            </section>
            <section class="c-attr-mt c-attr-undis">
              <span class="c-fff fsize14">主讲： {{ course.teacherName }}&nbsp;&nbsp;&nbsp;</span>
            </section>
            <section class="c-attr-mt of">
                <span class="ml10 vam">
                  <em v-if="iscollect==true" class="icon18 scIcon" style="background-color: red"/>
                  <em v-else class="icon18 scIcon" />
                    <a class="c-fff vam" title="收藏" href="#" @click="addcollect()">收藏</a>
                </span>
            </section>
            <section v-if="isbuy || Number(course.price)===0" class="c-attr-mt">
              <a href="#" title="立即观看" class="comm-btn c-btn-3" >立即观看</a>
            </section>
            <section v-else class="c-attr-mt">
              <a href="#" title="立即购买" class="comm-btn c-btn-3" @click="createOrder()">立即购买</a>
            </section>
          </section>
        </aside>
        <aside class="thr-attr-box">
          <ol class="thr-attr-ol ">
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">购买数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{ course.buyCount }}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">课时数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{ course.lessonNum }}</h6>
              </aside>
            </li>
            <li>
              <p>&nbsp;</p>
              <aside>
                <span class="c-fff f-fM">浏览数</span>
                <br>
                <h6 class="c-fff f-fM mt10">{{ course.viewCount }}</h6>
              </aside>
            </li>
          </ol>
        </aside>
        <div class="clear"/>
      </div>
      <!-- /课程基本信息 结束 -->

      <div class="mt20 c-infor-box">
        <article class="fl col-7">
          <section class="mr30">
            <div class="i-box">
              <div>
                <section id="c-i-tabTitle" class="c-infor-tabTitle c-tab-title">
                  <a name="c-i" class="current" title="课程详情">课程详情</a>
                </section>
              </div>
              <article class="ml10 mr10 pt20">

                <!-- 课程详情介绍 开始 -->
                <div>
                  <h6 class="c-i-content c-infor-title">
                    <span>课程介绍</span>
                  </h6>
                  <div class="course-txt-body-wrap">
                    <section class="course-txt-body">
                      <!-- 将内容中的html翻译过来 -->
                      <p v-html="course.description">{{ course.description }}</p>
                    </section>
                  </div>
                </div>
                <!-- /课程详情介绍 结束 -->

                <!-- 课程大纲 开始-->
                <div class="mt50">
                  <h6 class="c-g-content c-infor-title">
                    <span>课程大纲</span>
                  </h6>
                  <section class="mt20">
                    <div class="lh-menu-wrap">
                      <menu id="lh-menu" class="lh-menu mt10 mr10">
                        <ul>
                          <!-- 课程章节目录 -->
                          <li v-for="chapter in chapterList" :key="chapter.id" class="lh-menu-stair">
                            <a :title="chapter.title" href="javascript: void(0)" class="current-1">
                              <em class="lh-menu-i-1 icon18 mr10"/>{{ chapter.title }}
                            </a>
                            <ol class="lh-menu-ol" style="display: block;">
                              <li v-for="video in chapter.children" :key="video.id" class="lh-menu-second ml30">
                                <a
                                  :href="'/player/'+video.videoSourceId"
                                  :title="video.title"
                                  target="_blank">
                                    <span v-if="video.isFree === true && isbuy==false" class="fr">
                                        <i class="free-icon vam mr10">免费试听</i>
                                    </span>
                                  <span v-if="video.isFree === false && isbuy==false " class="fr">
                                        <i class="free-icon vam mr10">收费观看</i>
                                    </span>
                                  <span v-if="isbuy==true" class="fr">
                                        <i class="free-icon vam mr10">可观看</i>
                                    </span>

                                  <em class="lh-menu-i-2 icon16 mr5">&nbsp;</em>{{ video.title }}
                                </a>
                              </li>
                            </ol>
                          </li>
                        </ul>
                      </menu>
                    </div>
                  </section>
                  <!-- /课程大纲 结束 -->
                </div>
              </article>
            </div>
          </section>
        </article>
        <aside class="fl col-3">
          <div class="i-box">
            <!-- 主讲讲师 开始-->
            <div>
              <section class="c-infor-tabTitle c-tab-title">
                <a title href="javascript:void(0)">主讲讲师</a>
              </section>
              <section class="stud-act-list">
                <ul style="height: auto;">
                  <li>
                    <div class="u-face">
                      <a :href="'/teacher/'+course.teacherId" target="_blank">
                        <img :src="course.avatar" width="50" height="50" alt>
                      </a>
                    </div>
                    <section class="hLh30 txtOf">
                      <a :href="'/teacher/'+course.teacherId" class="c-333 fsize16 fl" target="_blank">{{ course.teacherName }}</a>
                    </section>
                    <section class="hLh20 txtOf">
                      <span class="c-999">{{ course.intro }}</span>
                    </section>
                  </li>
                </ul>
              </section>
            </div>
            <!-- /主讲讲师 结束 -->
          </div>
        </aside>
        <div class="clear"/>
      </div>
    </section>
    <!-- /课程详情 结束 -->
    <div class="mt50 commentHtml" style="width: 60%; margin-left: 20%">
      <div>
      <h6 class="c-c-content c-infor-title" id="i-art-comment">
        <span class="commentTitle">课程评论</span>
      </h6>
      <section class="lh-bj-list pr mt20 replyhtml" >
        <ul>
          <li class="unBr">
            <aside class="noter-pic">
              <img width="50" height="50" class="picImg" src="~/assets/img/avatar-boy.gif">
            </aside>
            <div class="of">
              <section class="n-reply-wrap">
                <fieldset>
                  <textarea name="" v-model="comment.content" placeholder="输入您要评论的文字" id="commentContent"></textarea>
                </fieldset>
                <p class="of mt5 tar pl10 pr10">
                  <span class="fl "><tt class="c-red commentContentmeg" style="display: none;"></tt></span>
                  <input type="button" @click="addComment()" value="回复" class="lh-reply-btn">
                </p>
              </section>
            </div>
          </li>
        </ul>
      </section>
      <section class="">
        <section class="question-list lh-bj-list pr">
          <ul class="pr10">
            <li v-for="(comment,index) in data.items" v-bind:key="index">
              <aside class="noter-pic">
                <img width="50" height="50" class="picImg" :src="comment.avatar">
              </aside>
              <div class="of">
                    <span class="fl">
                    <font class="fsize12 c-blue">
                      {{comment.nickname}}</font>
                    <font class="fsize12 c-999 ml5">评论：</font></span>
              </div>
              <div class="noter-txt mt5">
                <p>{{comment.content}}</p>
              </div>
              <div class="of mt5">
                <span class="fr"><font class="fsize12 c-999 ml5">{{comment.gmtCreate}}</font></span>
              </div>
            </li>

          </ul>
        </section>
      </section>

      <!-- 公共分页 开始 -->
      <div class="paging">
        <!-- undisable这个class是否存在，取决于数据属性hasPrevious -->
        <a
          :class="{undisable: !data.hasPrevious}"
          href="#"
          title="首页"
          @click.prevent="gotoPage(1)">首</a>
        <a
          :class="{undisable: !data.hasPrevious}"
          href="#"
          title="前一页"
          @click.prevent="gotoPage(data.current-1)">&lt;</a>
        <a
          v-for="page in data.pages"
          :key="page"
          :class="{current: data.current == page, undisable: data.current == page}"
          :title="'第'+page+'页'"
          href="#"
          @click.prevent="gotoPage(page)">{{ page }}</a>
        <a
          :class="{undisable: !data.hasNext}"
          href="#"
          title="后一页"
          @click.prevent="gotoPage(data.current+1)">&gt;</a>
        <a
          :class="{undisable: !data.hasNext}"
          href="#"
          title="末页"
          @click.prevent="gotoPage(data.pages)">末</a>
        <div class="clear"/>
      </div>
      <!-- 公共分页 结束 -->
    </div>
    </div>
  </div>
</template>>

<script>
  import course from "@/api/course"
  import comment from '@/api/comment'
  import order from '@/api/order'
  import collect from '@/api/collect'
  import cookie from 'js-cookie'
  export default {
    asyncData({ params, error }) {
      return {courseId: params.id}
    },
    data() {
      return {
        data:{},
        page:1,
        limit:4,
        total:10,
        comment:{
          content:'',
          courseId:''
        },
        course:{},
        chapterList:[],
        isbuy: false,
        iscollect: false
      }
    },
    created() {
      this.initCourseInfo()
      this.initComment()
      this.initcollect()
    },
    methods:{

      initcollect(){
        collect.getCollect(this.courseId).then(response => {
          this.iscollect=response.data.data.iscollect
          console.log(this.iscollect)
        })
      },
      addcollect(){
        if(this.iscollect==true){
          collect.deletCollect(this.courseId).then(response => {
            if(response==undefined){
            }else {
              this.$message({
                type: 'success',
                message: '删除收藏'
              })
              this.iscollect=false
            }
          })
        }else {
          collect.addCollect(this.courseId).then(response => {
            if(response==undefined){
            }else {
              this.$message({
                type: 'success',
                message: '添加收藏'
              })
              this.iscollect=true
            }
          })
        }
      },
      //根据课程id，调用接口方法生成订单
      createOrder(){
        order.createOrder(this.courseId).then(response => {
          if(response.data.success){
            //订单创建成功，跳转到订单页面
            this.$router.push({ path: '/order/'+ response.data.data.orderId })
          }
        })
      },
      //获取课程详情
      initCourseInfo() {
        course.getById(this.courseId)
          .then(response => {
            this.course=response.data.data.course
            this.chapterList=response.data.data.chapterVoList
            this.isbuy=response.data.data.isbuy
          })
      },
      //评论
      initComment(){
        comment.getPageList(this.page, this.limit, this.courseId).then(response => {
          this.data = response.data.data
        })
      },
      addComment(){
        this.comment.courseId = this.courseId
        this.comment.teacherId = this.course.teacherId
        comment.addComment(this.comment).then(response => {
          if(response.data.success){
            this.comment.content = ''
            this.$message({
              type: 'success',
              message: '回复成功'
            })
            this.initComment()
          }
        })
      },
      gotoPage(page){
        comment.getPageList(page, this.limit,this.courseId).then(response => {
          this.data = response.data.data
        })
      }
    },

  }
</script>
